Open an image in a GUI

Question

Claire Redfield 2013-2-27

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/65233-open-an-image-in-a-gui

Hello guys, I have

[f,p] = uigetfile({'*.png;*.jpg;*.bmp;*.tif','Supported images';...
                 '*.png','Portable Network Graphics (*.png)';...
                 '*.jpg','J-PEG (*.jpg)';...
                 '*.bmp','Bitmap (*.bmp)';...
                 '*.tif','Tagged Image File (*.tif,)';...
                 '*.*','All files (*.*)'});
x = imread([p f]);
himage=imshow(x);
title(f)

Which can open an image file and imshow it. My question is: How may i associate it with a button in a GUI ike

uicontrol('String', 'Original',...
'Callback', 'imshow(x);title Original;',...
'Units','normalized',...
'Position',[0 0 .15 .07]);

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Answer 1

Jan 2013-2-27

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/65233-open-an-image-in-a-gui#answer_76788

编辑：Jan 2013-2-27

在 MATLAB Online 中打开

You can store the code to select and display the image in the button's callback function:

uicontrol('String', 'Original', ...
   'Callback', @myCallback);
function myCallback(ObjectH, EventData)
FigureH = ancestor(ObjectH, 'figure');
[f,p] = uigetfile(...);
x = imread(fullfile(p, f));
himage = imshow(x, 'Parent', FigureH);
title(f)

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Claire Redfield 2013-2-27

Thank you, i have saved the function but for uicontrol('String', 'Original', ... 'Callback', 'myCallback',... 'Units','normalized',... 'Position',[.80 0 .15 .07]); it just doesnt work...

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Answer 2

Sean de Wolski 2013-2-27

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/65233-open-an-image-in-a-gui#answer_76797

在 MATLAB Online 中打开

figure;
ax = axes;
figure; peaks  %another figure
uicontrol('Style','pushbutton',...
        'Units','normalized',...
        'Position',[0.1 0.1 0.1 0.1],...
        'String','Push Me!',...
        'Callback',@(~,~)imshow(imread('cameraman.tif'),'parent',ax));  %first axes!!!

Specify the 'Parent' of the image in imshow(). This is explained in a Note in the doc for imshow

Note: If you are building a GUI where you want to control the figure and axes properties, be sure to use the imshow(..., 'Parent', ax) syntax.

doc imshow

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Claire Redfield 2013-2-27

imshow(imread('cameraman.tif') its just read a specific image while i want to open any image i choose, is there any way to do that?

Sean de Wolski 2013-2-27

All you have to do is change the string to whatever you selected with uigetfile. I was demonstrating how you put an image on a specific axes, which is what I thought you were having trouble with.

It look slike you have the imread part down so just pull that out of the callback for the pushbutton.

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